{
  "abstract": "Flux-driven two-fluid simulations in a diverted tokamak exhibit a confinement transition when a critical heating threshold is exceeded, as in experimental observations of the L-H transition. The simulations show that electromagnetic drift-wave turbulence spontaneously generates a sheared $E\\times B$ flow responsible for transport suppression in the edge. The toroidal-field asymmetry of the transition, here reproduced in simulations for the first time, arises from time-reversal symmetry breaking by finite collisionality, as demonstrated by a quasilinear calculation of the turbulent momentum flux. Scaling laws are analytically derived for the L-H power threshold in the high- and low-density branches, for the density minimum, and for the minimum power, all matching or surpassing the accuracy of existing empirical scalings.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.00624",
  "author_total": 6,
  "authors": [
    {
      "name": "Brenno De Lucca"
    },
    {
      "name": "Paolo Ricci"
    },
    {
      "name": "Benoit Labit"
    },
    {
      "name": "Davide Mancini"
    },
    {
      "name": "Louis Stenger"
    },
    {
      "name": "Zeno Tecchiolli"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8mab885e1071f.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.00624",
  "fulltext_url": null,
  "id": "8mab885e1071f",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.00624",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.plasm-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.00624",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8mab885e1071f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2605.00624",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.00624"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Theory for the power threshold of the L-H transition in tokamaks",
  "title_text": "Theory for the power threshold of the L-H transition in tokamaks",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/8mab885e1071f",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/rw25-wy15",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}